Belts. One is enough, right? Wrong. Belts are a great way to switch up an outfit or repurpose the same one you’ve been wearing week after week (you can’t fool us). Here are the answers to three questions about belt-ology.

1. What kind of belt should I wear with jeans? With a suit?
For jeans, throw on a leather, tweed, wool, or cotton belt – all these options look great against denim. On the other hand, a suit requires a sleek and simple belt. For navy suits, go with dark brown. For black and grey, look toward black leather.

2. How long should my belt be?
Dress belts should have at least a few inches to the left once fastened. Too-short lengths make the belt appear too tight (you don’t want people to think you’re going to pop a button or anything). Casual belts can be worn looser since they’re not as stiff.

3. Should I choose a thin or thick belt?
It’s all about the occasion. Never wear a thin (less than 1 inch in width) belt with jeans. That’s strictly for the ladies, and let’s keep it that way. With denim, go for a heftier buckle and thicker belt (between 1 and 1.5 inches in width). A thin(ner) option is, however, appropriate for formal and dressy events.

Still can’t decide? Own one black and one brown belt. You can’t go wrong.